baber/WOPTO huggingface dataset:
Patent GB-1515543-A (GB)
Title: Method for producing r-plane single crystal alpha alumina
IPC: C30B15/32
Filed: 1975-06-27
Abstract: 1515543 Unicrystalline α-Al 2 O 3  UNION CARBIDE CORP 27 June 1975 [28 June 1974] 27222/75 Heading C1A Massive unicrystalline α-Al 2 O 3  is produced by:-(i) melting alumina by heating it to at least 2040‹C with at least one oxide selected from the oxides of Cr, Fe and Mg, the aggregate of the oxides being sufficient to provide at least 90 ppm by wt. of metal ion and sufficient to provide a unicrystalline product of substantially circular cross-section; (ii) inserting a seed rod of unicrystalline α-Al 2 O 3  having an orientation such that its longitudinal axis is normal to an R-plane of the seed rod into the melt; (iii) maintaining an atmosphere over the melt which is substantially chemically inert to the melt; (iv) withdrawing the seed rod from the melt such that alumina is solidified and crystallized on the seed rod to form a massive unicrystalline alpha-alumina product of increasing length and substantially circular in cross-section having a growth axis common with the longitudinal axis of the seed rod.
Patent GB-1035810-A (GB)
Title: Improvements in or relating to processes for the manufacture of monocrystalline layers of semiconductor material
IPC: H01L21/205
Filed: 1965-06-28
Abstract: <PICT:1035810/C6-C7/1> A layer of semi-conductor material, e.g. silicon or germanium, uniformly doped with boron is deposited in a monocrystalline layer by dissolving decarborane (B10H14) in a liquid compound of the semi-conductor material, e.g. silicochloroform or silicon tetrachloride, vapourizing the solution, and decomposing the vapour by heat.  As shown in Fig. 2, a solution of decaborane in silicochloroform in a vessel 22 has a carrier gas e.g. hydrogen fed into it through a pipe 24, and the vapour mixture is fed to a water cooled quartz reaction chamber containing a silicon base 8 heated by tungsten electrodes 7, 9.  In a modification (Fig. 3, not shown) the layer is deposited on silicon discs heated by induction coils. Alternatively the reaction chamber may be made of silicon and surrounded with a quartz housing.ALSO:<PICT:1035810/C1/1> A layer of silicon uniformly doped with boron is deposited on a monocrystalline layer of silicon by dissolving decaborane (B10H14) in a liquid compound of silicon, e.g. silicochloroform or silicon tetrachloride, vaporising the solution, and decomposing the vapour by heat.  As shown in Fig. 2, a solution of decaborane in silicochloroform in a vessel 22 has a carrier gas, e.g. hydrogen, fed into it through a pipe 24, and the vapour mixture is fed to a water-cooled quartz reaction chamber containing a silicon base 8 heated by tungsten electrodes 7, 9. In a modification (Fig. 3, not shown) the layer is deposited on silicon discs heated by induction coils.  Alternatively, the reaction chamber may be made of silicon and surrounded with a quartz housing.
Patent GB-812531-A (GB)
Title: Fumigant composition
Inventor: PETERS CLAYTON
IPC: A01N59/04
Filed: 1957-08-29
Abstract: A fumigant composition comprises a mixture of carbon tetrachloride and carbon disulphide as a major toxic ingredient preferably in an amount from 70 to 90 per cent by weight of the former and 10 to 30 per cent by weight of the latter, and in solution therein a flash suppressant amount of methyl bromide preferably in an amount of from 0.25 to 4 per cent by weight or ethyl bromide preferably in an amount from 1 to 4 per cent by weight.
Patent GB-440674-A (GB)
Title: Improvements in bayonet type covers for bottles, jars and like vessels
IPC: B65D41/04
Filed: 1934-09-22
Abstract: 440,674. Closures for bottles. ZADEK, H., 53, N³rnbergerstrasse, Berlin. Sept. 22, 1934, Nos. 27302 and 27303. Convention dates, Sept. 22, 1933 and Sept. 19, 1934. [Class 125 (iii)] A bayonet-joint type of closure for a bottle &c. has a skirt portion 11 which is thicker than the top portion 12 and inclined lugs 4 which engage projections on the bottle and distort the closure into resilient engagement with the bottle.
Patent GB-719909-A (GB)
Title: Method of increasing the resistance of stainless steel to corrosion
IPC: C23C22/73
Filed: 1952-10-30
Abstract: Stainless steel is heated with (a) p-nitrotoluene, dilute nitric acid and trisodium orthophosphate at 185-195 DEG  C. under a pressure rising to 35 kg./cm.2, p-nitrobenzoic acid being formed in the reaction; (b) dilute nitric acid and a phosphate of beta-picoline at 220-230 DEG  C. under a pressure of 40 kg./cm.2, nicotinic acid being formed in the reaction.ALSO:Stainless steel is treated at a temperature not below 100 DEG C and under superatmospheric pressure with phosphoric acid or a phosphate in the presence of nitric acid and a substance which will react with the nitric acid to form a nitrogen oxide or mixture of nitrogen oxides.  In examples stainless steel is heated with (a) p-nitrotoluene, dilute nitric acid and trisodium orthophosphate at 185 DEG -195 DEG C. under a pressure rising to 35 kg/cm2 p-nitro benzoic acid being formed in the reaction (b) dilute nitric acid and a phosphate of beta-picoline at 220 DEG -230 DEG C. under a pressure of 40 kg/cm2 nicotinic acid being formed in the reaction (c) dilute nitric acid, phosphoric acid and a mixture of pyridine bases at 200 DEG C. and under pressure of 30 kg/cm2.
Patent GB-300755-A (GB)
Title: Improvements in and relating to petrol can holders
IPC: B60R9/02
Filed: 1927-10-14
Abstract: 300,755. Thomas, J. L. H. Oct. 14, 1927. Petrol and like cans and receptacles, detachably securing to running-boards.-A holder for petrol cans and like receptacles comprises a pair of anglemembers A<1>, A<2> adapted to be fixed to therunning-board or other part of a motor-vehicle and extending along two sides of the can &c., and a pair of clamping rods B<1>, B<2> extending between the members A<1>, A<2> and adapted to engage the bead of the can, one of the rods B<1> being adjustable in slots L to allow for variation in the width of the can and the other rod B<2> being tiltably connected to one member A<1> and adapted to be secured in an inclined slot M in the other member A<2>. The securing device for the rod B<2> preferably consists of a, lever C pivoted at F to the member A<2> and having an inclined slot S for forcing the rod B<2> downwardly, the lever being held in its securing position by a catch E engaging a recess 0' in the member A<2>.
Patent GB-209203-A (GB)
Title: Improvements in display appliances for biscuits, confectionery and the like
IPC: A47F3/14
Filed: 1922-10-10
Abstract: 209,203. Lockie, A. C. Oct. 10, 1922. Articles to be displayed, rotating supports for; moving apparatus combined with clocks.-A display apparatus for biscuits &c. comprises a board 3 of metal, wood, cardboard &c. provided with a series of openings 4 arranged in a circular, oval or rectangular manner and behind which the samples are displayed in boxes with transparent lids or open boxes may be used, the openings 4 being covered with transparent material. Indicators 13 carrying price tickets 18 radiate from the centre 14 and are provided with longitudinal grooves 15 at each edge to detachably receive a slip on which descriptive matter is inscribed. The centre 14 may carry a clock or other instrument. The apparatus may be suspended by a cord or mounted on a stand or provided with rear supporting struts. According to the Provisional Specification the device may be rotatably mounted and the indicators 13 constituted by grooves cut in the board 3.
Patent GB-816934-A (GB)
Title: Electromagnetic transducer
IPC: G11B5/29
Filed: 1957-08-30
Abstract: 816,934. Magnetic recording heads. STANDARD TELEPHONES & CABLES Ltd. Aug. 30, 1957 [Sept. 5, 1956], No. 27407/57. Class 40 (2). A magnetic head comprises a core 1, Fig. 1, formed of a flat magnetic ribbon, e.g. permalloy, with a coil 6, 6<SP>1</SP> on each leg. The core assembly is placed in a recess 20, Fig. 4, in a copper base-plate 18 and the two parts 5 which form the flux gap project through a slot 24. The depth of the recess is equal to the width of the ribbon and two apertures 25, 25<SP>1</SP> are cut right through the plate to accommodate the coils. The lead-out wires from the coils are secured to two terminals 13, 13<SP>1</SP> which are clamped between two insulating plates also accommodated in the recess 20 and held by a screw 17. A coil former 26 is placed within the coil and has wrapped around its edges a strip of insulating material 30 which also acts as a non-magnetic spacer 31. between the polepieces 5. The core may be made in two parts with the joint between the bends 2 and 21 secured by a clip. A number of the heads may be stacked in which case the part of the coil projecting above the base-plate 18 is accommodated within the. apertures 25 and 25<SP>1</SP> of the adjacent baseplate. These apertures are finally filled with a plastic material and the edge 32 machined away to give a curved surface 32<SP>1</SP> and the desired flux-gap.
Patent GB-1359675-A (GB)
Title: Testing apparatus for electrical connectors
IPC: G01R31/50
Filed: 1971-06-11
Abstract: 1359675 Line continuity testing RANK XEROX Ltd. 8 June 1972 [11 June 1971] 27435/71 Heading G1U In a line continuity testing arrangement the two ends of the line 13, Fig. 1, to be tested are connected to two terminals 11, 12, both of which are connected to a positive supply 16 and to a diode AND gate 17, 18, so that normally the gate produces a positive output and a sensing transistor 21 is conductive, and to effect the test the terminal 11 is made negative by making a test transistor 25 conductive, whereupon the output from the gate 17, 18 goes negative also, thereby cutting off the sensing transistor 21, only when the line 13 under test is continuous, since otherwise diode 18 of the gate still receives a positive input. In a first development of this basic circuit, Figs. 2A, 2B (not shown) ten such circuits are associated with a counter so that the continuity of ten lines can be tested sequentially, and the corresponding transistors 21 are associated with a common current sensing transistor (TR21) arranged, by means not described, to stop the counter when a faulty line is detected. A second development Fig. 3 (not shown) is also described which is adapted for testing line continuity when a plurality of lines are commoned at one end.
Patent GB-519340-A (GB)
Title: Improved explosive and process of making the same
IPC: C06B41/08
Filed: 1938-09-20
Abstract: 519,340. Lead styphnate explosive. WINCHESTER REPEATING ARMS CO. Sept. 20, 1938, No. 27465. Convention date, Sept. 22, 1937. [Class 2 (iii)] Lead styphnate, the normal lead salt of trinitroressorcinol, used .in the production of primers, in manufactured as small plate-like crystals of average size 0.007 cm. x 0.005 cm. x 0.0015 cm., This is less dangerous in handling thanthe prismatic, crystals by dissolving styphnic acid, containing 'as impurities the nitro derivatives of resorufin, indophenol and/or resazurin, in caustic soda, adding a lead nitrate-acetic acid solution thereto at a temperature of 55C. until precipitation of lead styphnate in the form of a gel occurs, and then adding additional lead nitrate-acetic acid solution with continuous stirring at 60C. until lead styphnate is converted into crystals. The factors which control the precipitation of the lead styphnate as a hydrated gel are the control of temperature, concentration of sodium styphnate and regulation of the addition of lead nitrate-acetic acid solution together with the correct ratio of sodium hydrande to acetic acid. 'After the precipitation as a gel, rapid transformation to the crystalline state is necessary, controlled by increase in temperature or increase in concentration of acetic acid. If one of the factors is changed, the others may be varied to compensate for it.
Patent GB-1464500-A (GB)
Title: Internal retaining tabs for a filled piston
IPC: F04B1/12
Filed: 1975-06-30
Abstract: 1464500 Pistons CATERPILLAR TRACTOR CO 30 June 1975 [27 Nov 1974] 27560/75 Heading F2T In a hollow piston for an hydraulic translating unit, filler material such as epoxy 52, is retained by tabs 51, formed by cutting into the chamfer 43 with the teeth of a staking tool (53, Fig. 4, not shown). Lubrication duct 58 is formed by moulding the material in situ.
Patent GB-1380548-A (GB)
Title: Brakes
IPC: F16D55/228
Filed: 1973-06-11
Abstract: 1380548 Disc brakes J J LUCHIER and P LUCHIER 11 June 1973 [13 June 1972] 27631/73 Heading F2E A vehicle wheel disc brake has an annular flange 17 and an annular plate 1 with engageable friction linings 16, 21 respectively, the plate being connected to an annular member 27 slideable under hydraulic pressure in a stepped piston 29 and having a stepped bore with at least one groove and an associated 0-ring, a stop on the lesser diameter part of the piston remote from the greater diameter part limiting axial member movement. An axle 6 of the wheel is clamped in a sleeve 11 at one end of a fork tine of a motorcycle, the other tine having a sleeve screw threadedly engaged with a thread 12 of the axle, two pistons 29, 29a being held against the sleeves. A hub 15 of the hub has two flanges 17, 17a connected thereto by radial webs 18, the flanges having associated annular plates 1, 1a and cooling fins. Air passes through gaps between the plates 1,1a and their respective members 27, 27a, past the radial webs 18 to cool parts of the brakes. Inserts (not shown) are secured into the members 27, 27a for fluid supply and inserts 51, 51a are provided therein for bleeding purposes. The plates 1, 1a are prevented from rotation by struts being attached thereto, parallel to the fork tines. 0-ring seals 33, 34 not only provide piston-member sealing but are distorted by member movement to provide the required member return force upon brake release.
Patent GB-221683-A (GB)
Title: Improvements in or relating to bow ties
IPC: A41D25/06
Filed: 1923-11-03
Abstract: 221,683. Witting, H. N., and Sambrook, Witting, & Co., Ltd. Nov. 3, 1923. Neckties.-To facilitate tying a bow-tie, the ends of the tie are folded back and secured by stitching to form loops B, C. The portion folded back is preferably equal in length to that of the complete bow, and is stitched to the tie at its centre A<1> forming a loop and a free end or tag. With the tags B<1>, C' lying along the tie, as shown in dotted lines, the bow may be tied in the usual manner. If the tags are folded back so as to lie upon their respective loops, a bow-tie having a loop and a tag at each side of the knot can be formed by tying a simple knot.
Patent GB-199348-A (GB)
Title: Lay figure of the outline type
IPC: A63H3/16
Filed: 1922-10-12
Abstract: 199,348. Herbst, R. June 16, 1922, [Convention date]. Lay-figu.re and like stands.-A lay-figure for displaying garments, drapery, &c., comprises a flat outline figure mounted on a base and consisting of exchangeable parts of various shapes whereby the attitude of the figure may be varied. Parts of the figure, for example the elbow, head, &c., may be pivotally jointed, preferably by an intermediate piece 3 engaging a mortice in each of the jointed parts d, d' and pivoting on pins 4, and of a shape to complete as far as possible the normal outline of the figure. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also a flat outline rigid figure p mounted on the base s, the head being completed by painting. This subject-matter does not appear in the Specification as accepted.
Patent GB-1207643-A (GB)
Title: Improved steel products and their manufacture
IPC: C22C38/04
Filed: 1969-06-02
Abstract: 1,207,643. Carburized steel. FAGERSTA BRUKS A.B. June 2, 1969 [June 14, 1968], No.27763/69. Heading C7A. A steel consisting, by weight, of C 0À01 - 0À04% Mn 2À2 - 6% Si 0À5 - 2% Al (acid sol.) up to 0À2% Nb, Ta and/or V 0À01 - 0À5% N up to 0À03% Zr up to 0À2% Fe and impurities - balance, is carburized. The carburized layer has a C content of 0À5 - 1À5%. After carburizing, the product may be hardened and tempered. Uses. Rods, bars, tubes, gear wheels and rock drill bits.
Patent GB-758993-A (GB)
Title: Process for the hydrogenation of meta-nitro-acetophenone
IPC: C07C221/00
Filed: 1954-09-28
Abstract: Meta-aminoacetophenone or meta-aminophenylmethylcarbinol is prepared by a process in which crude meta - nitroacetophenone is washed with an aqueous solution of an alkali metal carbonate or bicarbonate, the washed meta-nitroacetophenone is hydrogenated in the presence of a liquid phase hydrogenation catalyst and thereafter the hydrogenation residue is distilled to recover meta-acetophenone or meta-aminophenylmethylcarbinol.  The alkali metal compounds specified are those of sodium or potassium.  The alkaline solution is preferably sufficiently hot to melt the crude nitro compound and sufficient is used to give a pH greater than 7 when the washing is finished.  The washed compound may be dispersed or dissolved in a solvent such as dioxane or ethyl or isopropyl alcohol before hydrogenation.  Specified hydrogenation catalysts are platinum oxide and Raney nickel.  The hydrogenation is preferably under 150 to 2000 p.s.i.g. pressure.  For meta-aminoacetophenone the hydrogenation temperature is 25-100 DEG  C. and for meta-aminophenylmethylcarbinol 80-180 DEG  C.  The results obtained by hydrogenation of the unwashed nitro compound are described.  In Example (1) meta-nitroacetophenone is mixed with a sodium carbonate solution, heated and stirred until all the nitro compound is melted, the washed compound (recovered by filtration after cooling) dissolved in dioxane and hydrogenated, using Raney nickel catalyst, the meta-aminoacetophenone being recovered by vacuum distillation.  Further Examples (2-5) describe similar preparations of the same compound or of meta-aminophenylmethylcarbinol.
Patent GB-1194255-A (GB)
Title: Improvement in Aircraft Throttle Closure Apparatus for Flare.
IPC: G05D1/06
Filed: 1967-06-16
Abstract: 1,194,255. Aircraft instruments. SAFE FLIGHT INSTRUMENTS CORP. June 16, 1967 [Nov.21, 1966], No.27926/67. Heading G1N. A signal, at 98, representing forward horizontal acceleration of an aircraft, is compared at 24, with a reference signal from 20, the difference controlling, via a servo-amplifier 38, a throttle adjusting mechanism 48 to achieve a predetermined flight path (AB), Fig.1 (not shown) during the final stage of landing, i.e. "flare". The difference signal is also indicated at 28 for pilot control. Gauged switches 18, 75, 76 are in the shown position during normal flight, as are gauged switches 32, 122, so that a speed command computer drives the servo-amplifier 38. When the flare path start (A) is reached a signal is received at 66 which after a time delay at 68 changes over the switches 18, 75, 76. The throttle is now controlled by the said difference signal, the forward acceleration signal being the voltage between the wipers of potentiometers 90, 94, one sensitive to the pitch angle from a gyro 82, and the other to a pendulum accelerometer 84. Upon touchdown a switch 100 is actuated and supplies a current from 108 to operate a relay 118, the switch 112 being changed over (from shown position) for flare. Relay 118 controls the switch contacts 32, 122 to apply a rapid retard signal from 120 via a diode 44 (a retard signal being positive) to the amplifier 38. Safety features include a switch 42 operating at a certain degree of throttle closure to prevent stalling when the aircraft is in flight, by preventing a retard signal being applied through the diode 44 from the comparator 24; and also a relay 124 which, should the touchdown relay 100 operate due to a malfunction in flight, disconnects the power supply 50 from the motor of the servosystem, and lights a lamp 126 to warn the pilot that manual operation is necessary.
Patent GB-158700-A (GB)
Title: Improvement in stationary vacuum cleaning machines
IPC: A47L5/20
Filed: 1919-11-11
Abstract: 158,700. Heiliger, P. Nov. 11, 1919. Bellows, vacuum cleaning - apparatus. - A vacuum cleaner comprises two bellows the free ends of which are pivotally secured to a common connecting-arm and are pivotally supported; the bellows are formed with fabric bodies and alternately-disposed distending and restraining rings. As shown, a sheet-metal casing 5 is provided having a pair of bellows openings in the upper portion covered by caps 10, 10<a> connected by pipes 14, 14a with a dust-receptacle 12 containing a. filter bag 18, into which the vacuum pipe 15 opens. The free inner ends of the bellows are connected by a curved arm 41 pivoted on supporting-yokes thereon, and the bellows are operated by a crank-shaft 56 eccentrically pivoted on a disc 55 driven through toothed gearing from a motor 44. Arms 34, pivoted at their lower end to yokes on the base of the casing, support the bellows at their free ends. The bellows valves are constituted by perforated casings 24, 24b, Fig. 4, covered on their outer curved ends by elastically-attached leathers.
Patent GB-664030-A (GB)
Title: Method and apparatus for purifying selenium and similar semi-conductive substances
IPC: C01B19/02
Filed: 1949-11-01
Abstract: <PICT:0664030/III/1> Selenium and similar semi-conductive substances are purified by distilling the substance in an enclosed space provided with an inlet for unpurified substance and an outlet for purified substance, the inlet and outlet being closed by means of liquid seals formed by unpurified and purified substance respectively. Crude liquid selenium is fed into the inlet tube 2 of retort 1, which is of non-reactive material, e.g. borosilicate glass, quartz or metal, and forms an air-tight seal.  Enclosure 6 is heated to above the distillation temperature so that the selenium distils from tube 2 into tube 3 which is outside enclosure 6.  Tube 3 extends into retort 1 at 5 so that direct passage of unpurified liquid is impossible.  The selenium condenses in tube 3 which has orifice 4 of such size that a liquid seal is formed.  The purified selenium flows through orifice 4 into distilled water in container 7 wherein it solidifies into globules, which are subsequently dried.  The distillation may be carried out under reduced pressure or with any gaseous atmosphere.
Patent GB-506988-A (GB)
Title: Automatic expanding device for piston rings
IPC: F16J9/10
Filed: 1938-09-26
Abstract: 506,988. Piston-rings. BACH, H., and BACH, P. Sept. 26, 1938, No. 27977. [Class 122 (i)] Piston-rings g are expanded by pins carried by plates d supported in grooves in semicircular members c pressed apart by a spring b. The spring is supported between telescopic members i, h screwed into the members c and having screw threads o, n adapted to be engaged for removal or insertion of the members as a unit.
Patent GB-302450-A (GB)
Title: Improvements relating to the manufacture of boots and shoes
IPC: A43B9/06
Filed: 1927-10-21
Abstract: 302,450. Rice, F. E. Oct. 21, 1927. Connecting uppers to insoles and soles. - Relates to veldtshoen, and consists in first attaching a strip C of material to an insole A so as to form a projecting flange around same, and then fastening the folded portion of the upper G into the groove between the insole and the flange. Preferably, the strip C is a skeleton sole obtained by skiving it off an outer sole e.g. with an "Apex'' skiver. Preferably, also, the outer sole F is stuck to the assembly of strip and insole and the upper is secured by stitches h. To facilitate assembly of the insole and strip, a device is used comprising a sole blank N provided with a shallow wall 0 around its edge, the height and inner contour of which correspond to the insole A. By providing the wall on both sides of the blank, the device may be used for both right and left soles.